Progress: continue working on FSS read/write programs and related.

Progress: continue working on FSS read/write programs and related.

Get comment delimitation working in FSS read/write functions.
- Comments are now escaped on read/write as appropriate.
- Rename appropriate private fl_fss functions.
- Add object_as boolean to designate whether or not this function is meant to read an object or content.
  - This ends up fixing a bug in the fl_fss_extended read function where a comment character before a content is incorrectly treated as an actual comment (this behavior is not allowed).
- Add similar behavior to the write functions.
  - The basic list and especially the extended list may not be complete in this regard.

Do some cleanup in the fss read programs that is related to the changes in this commit.
- There is still room for cleanups but that is not my focus at this time.

Add a -p/--pipe parameter to the FSS read functions to provide a way of returning data in the pipe-friendly format used by the FSS write programs.